.tt{
	text-align: center;
	font-size: 30px;
	margin-bottom: 60px;
}
.col-md-4{
	overflow: hidden;
}
.des{
	position: absolute;
	width:100%;
	top:-100%;
	height: 100%;
	-webkit-transition:0.5s;
	-moz-transition:0.5s;
	transition: 0.5s;
	background:rgba(188,188,188,0.8);
	overflow: hidden;	

}
.des h4{
	text-align: center;
	padding-top: 10%;
	/*font-size:2vw;*/
	
}
.des p{
	padding-top: 5%;
	text-align: center;
	/*overflow: hidden;	*/
}
.des span{
	margin-right: 20px;
}
.des a{
	display: block;
	color: black;
	width: 100%;
	height: 100%;
}
.col-md-4:hover .des{
	top: 0px;
}